#!/bin/sh

DEF_VER=v2.0

LF='
'

# First see if there is a version file (included in release tarballs),
# then try git-describe, then default.
if test -f version
then
    VN=$(cat version) || VN="$DEF_VER"
elif test -d .git -o -f .git &&
    VN=$(git describe --match "v[0-9]*" --abbrev=4 HEAD 2>/dev/null) &&
    case "$VN" in
	*$LF*) (exit 1) ;;
	v[0-9]*)
	    git update-index -q --refresh
	    test -z "$(git diff-index --name-only HEAD --)" ||
	    VN="$VN-dirty" ;;
    esac
then
    VN=$(echo "$VN" | sed -e 's/-/./g');
else
    VN="$DEF_VER"
fi

VN=$(expr "$VN" : v*'\(.*\)')

echo $VN | tr -d "$LF"
